Alert archive / Texas / Lake Wind Advisories in 2011
Lake Wind Advisory 2, NWS Shreveport, LA
NWS Shreveport, LA issued this lake wind advisory at Jan 31, 2011, 6:47 PM CST for 21 counties in Texas; 17 parishes in Louisiana; 9 counties in Arkansas. It took effect at Feb 1, 2011, 6:00 AM CST. It was in force for 23 hr.
The area
The counties it named.
The facts
- Issued
- Jan 31, 2011, 6:47 PM CST (00:47 UTC)
- In effect from
- Feb 1, 2011, 6:00 AM CST
- Expired
- Feb 2, 2011, 4:41 AM CST
- In force
- 23 hr
- Issued by
- NWS Shreveport, LA
All 47 counties
Columbia County, AR, Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Sevier County, AR, Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Sabine Parish, LA, Union Parish, LA, Webster Parish, LA, Winn Parish, LA, Angelina County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Red River County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 16 km from the middle of the area, began a volume at 00:50 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.8 hours before the alert went out and 282 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 62 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 563 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
What forecasters said that day
The local office's own words before this lake wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Shreveport, LA wrote its last area forecast discussion before this lake wind advisory went out at Jan 31, 6:31 PM CST, 16 minutes earlier.
Area forecast discussion, Jan 31, 6:31 PM CST, 16 minutes before
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</html>The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 1, 3:30 AM CST | Freeze Warning | SHV | Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more | 18 hr |
| Feb 1, 3:31 AM CST | Wind Chill Advisory | SHV | Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more | 30 hr |
| Feb 1, 6:32 AM CST | Severe Thunderstorm Warning | SHV | Cass, Harrison, Marion | 28 min |
| Feb 1, 6:35 AM CST | Severe Thunderstorm Warning | SHV | Harrison, Panola | 25 min |
| Feb 1, 7:53 AM CST | Areal Flood Advisory | SHV | Bossier, Caddo, De Soto, Natchitoches, Red River, Sabine | 112 min |
| Feb 1, 8:00 AM CST | Severe Thunderstorm Warning | SHV | De Soto, Natchitoches, Red River, Sabine | 60 min |
| Feb 1, 8:19 AM CST | Tornado Warning | SHV | De Soto, Natchitoches, Red River, Sabine, Winn | 41 min |
| Feb 1, 8:51 AM CST | Severe Thunderstorm Warning | SHV | Natchitoches, Winn | 38 min |
Nearby
Lake Wind Advisories in Texas, 2011Lake Wind Advisories in Louisiana, 2011Lake Wind Advisories in Arkansas, 2011Every lake wind advisory in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.